138230 has 16 divisors (see below), whose sum is σ = 260064. Its totient is φ = 52800.

The previous prime is 138209. The next prime is 138239. The reversal of 138230 is 32831.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 138199 and 138208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71 + ... + 530.

It is an arithmetic number, because the mean of its divisors is an integer number (16254).

2¹³⁸²³⁰ is an apocalyptic number.

138230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138230 is a deficient number, since it is larger than the sum of its proper divisors (121834).

138230 is a wasteful number, since it uses less digits than its factorization.

138230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 138230 is about 371.7929531339. The cubic root of 138230 is about 51.7051857514.

The spelling of 138230 in words is "one hundred thirty-eight thousand, two hundred thirty".